RADIATION DOSIMETRY SOL OR GEL AND RADIATION DOSIMETER COMPRISING SAME AS MATERIAL FOR RADIATION DOSIMETRY
申请人:Riken
公开号:EP3686632A1
公开(公告)日:2020-07-29
There is provided a radiation dosimetry sol or gel, and a radiation dosimeter containing the sol or the gel as a material for radiation dosimetry.
A radiation dosimetry sol or gel characterized by comprising a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; and a silicate salt (B).
A radiation dosimetry sol or gel characterized by comprising a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; a silicate salt (B); a water-soluble organic polymer (C) having an organic acid salt structure or an organic acid anion structure; and a dispersant (D) for the silicate salt (B).
A radiation dosimeter comprising, as a material for radiation dosimetry, the above-mentioned radiation dosimetry sol or gel.
Radiation dosimetry sol or gel and radiation dosimeter comprising same as material for radiation dosimetry
申请人:RIKEN
公开号:US11150358B2
公开(公告)日:2021-10-19
A radiation dosimetry sol or gel, and a radiation dosimeter containing the sol or the gel as a material for radiation dosimetry. A radiation dosimetry sol or gel including a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; and a silicate salt (B). A radiation dosimetry sol or gel including a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; a silicate salt (B); a water-soluble organic polymer (C) having an organic acid salt structure or an organic acid anion structure; and a dispersant (D) for the silicate salt (B). A radiation dosimeter including, as a material for radiation dosimetry, the above-mentioned radiation dosimetry sol or gel.
Described is a self-indicating instant radiation dosimeter (
1001
) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (
10
), e.g., a diacetylene (R—C≡C—C≡C—R′, where R and R′ are substituents groups) or a radiochromic dye, a polymeric binder (
20
) and optionally a shelf life extender (
50
) or an activator (
40
). The radiation sensitive composition (
10
) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (
10
) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.
Pyrene derived functionalized low molecular weight organic gelators and gels
binary functionalized lowmolecular weight organicgelators (FLMOGs) and gels thereof in selected organic solvents were synthesized and characterized. The functionality refers to a functional group that does not take part in formation of the supramolecular gel network, but remains free and available for other purposes, such as to bind nanoparticles or other molecules into the gel structure.
yr 衍生的二元官能化低分子量有机物 胶凝剂 (FLMOG)及其在特定有机物中的凝胶 溶剂被合成和表征。官能团是指不参与超分子凝胶网络形成但保留自由且可用于其他目的(例如结合)的官能团纳米粒子 或其他分子进入凝胶结构。